[Formula Presented]-dibaryon and hypernucleus formation in the [Formula Presented] reaction at rest

J. K. Ahn; S. Aoki; K. S. Chung; M. S. Chung; H. En’yo; T. Fukuda; H. Funahashi; Y. Goto; A. Higashi; M. Ieiri; T. Iijima; M. Iinuma; K. Imai; Y. Itow; J. M. Lee; S. Makino; A. Masaike; Y. Matsuda; Y. Matsuyama; S. Mihara; C. Nagoshi; I. Nomura; I. S. Park; N. Saito; M. Sekimoto; Y. M. Shin; K. S. Sim; R. Susukita; R. Takashima; F. Takeutchi; P. Tlustý; S. Weibe; S. Yokkaichi; K. Yoshida; M. Yoshida; T. Yoshida; S. Yamashita

doi:10.1103/PhysRevC.62.055201

[Formula Presented]-dibaryon and hypernucleus formation in the [Formula Presented] reaction at rest

J. K. Ahn, S. Aoki, K. S. Chung, M. S. Chung, H. En’yo, T. Fukuda, H. Funahashi, Y. Goto, A. Higashi, M. Ieiri, T. Iijima, M. Iinuma, K. Imai, Y. Itow, J. M. Lee, S. Makino, A. Masaike, Y. Matsuda, Y. Matsuyama, S. MiharaC. Nagoshi, I. Nomura, I. S. Park, N. Saito, M. Sekimoto, Y. M. Shin, K. S. Sim, R. Susukita, R. Takashima, F. Takeutchi, P. Tlustý, S. Weibe, S. Yokkaichi, K. Yoshida, M. Yoshida, T. Yoshida, S. Yamashita

研究成果: ジャーナルへの寄稿 › 学術誌 › 査読

抄録

Stopped-[Formula Presented] reactions have been investigated with respect to H-dibaryon and hypernucleus formation with a scintillating fiber detector. Out of [Formula Presented] tagged [Formula Presented] particles via the [Formula Presented] reaction we obtained 72 stopping [Formula Presented] events with [Formula Presented] background events after imposing kinematic constraints. Hypernuclear production has been studied by observing free Λ decays in the stopped-[Formula Presented] reactions. From the observed Λ momentum spectrum, we have found the hypernuclear production rates to be [Formula Presented] and [Formula Presented] for double/twin-Λ hypernucleus, single-Λ hypernucleus, and no hypernucleus cases, respectively. With the same sample, we set upper limits on R (stopped-[Formula Presented] stopped-[Formula Presented] all) for [Formula Presented] decaying into [Formula Presented] and [Formula Presented] for [Formula Presented] masses just below [Formula Presented] mass threshold and for [Formula Presented] lifetime range [Formula Presented] The upper limits on [Formula Presented] are [Formula Presented] assuming all of the [Formula Presented] decay into each decay mode. Our results give a tight constraint on the existence of the bound [Formula Presented] in comparison with the theoretical estimates of Aerts and Dover, albeit with different target nuclei.

本文言語	英語
ページ（範囲）	12
ページ数	1
ジャーナル	Physical Review C - Nuclear Physics
巻	62
号	5
DOI	https://doi.org/10.1103/PhysRevC.62.055201
出版ステータス	出版済み - 2000
外部発表	はい

!!!All Science Journal Classification (ASJC) codes

核物理学および高エネルギー物理学

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10.1103/PhysRevC.62.055201

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Ahn, J. K., Aoki, S., Chung, K. S., Chung, M. S., En’yo, H., Fukuda, T., Funahashi, H., Goto, Y., Higashi, A., Ieiri, M., Iijima, T., Iinuma, M., Imai, K., Itow, Y., Lee, J. M., Makino, S., Masaike, A., Matsuda, Y., Matsuyama, Y., ... Yamashita, S. (2000). [Formula Presented]-dibaryon and hypernucleus formation in the [Formula Presented] reaction at rest. Physical Review C - Nuclear Physics, 62(5), 12. https://doi.org/10.1103/PhysRevC.62.055201

Ahn, JK, Aoki, S, Chung, KS, Chung, MS, En’yo, H, Fukuda, T, Funahashi, H, Goto, Y, Higashi, A, Ieiri, M, Iijima, T, Iinuma, M, Imai, K, Itow, Y, Lee, JM, Makino, S, Masaike, A, Matsuda, Y, Matsuyama, Y, Mihara, S, Nagoshi, C, Nomura, I, Park, IS, Saito, N, Sekimoto, M, Shin, YM, Sim, KS, Susukita, R, Takashima, R, Takeutchi, F, Tlustý, P, Weibe, S, Yokkaichi, S, Yoshida, K, Yoshida, M, Yoshida, T & Yamashita, S 2000, '[Formula Presented]-dibaryon and hypernucleus formation in the [Formula Presented] reaction at rest', Physical Review C - Nuclear Physics, vol. 62, no. 5, pp. 12. https://doi.org/10.1103/PhysRevC.62.055201

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title = "[Formula Presented]-dibaryon and hypernucleus formation in the [Formula Presented] reaction at rest",

abstract = "Stopped-[Formula Presented] reactions have been investigated with respect to H-dibaryon and hypernucleus formation with a scintillating fiber detector. Out of [Formula Presented] tagged [Formula Presented] particles via the [Formula Presented] reaction we obtained 72 stopping [Formula Presented] events with [Formula Presented] background events after imposing kinematic constraints. Hypernuclear production has been studied by observing free Λ decays in the stopped-[Formula Presented] reactions. From the observed Λ momentum spectrum, we have found the hypernuclear production rates to be [Formula Presented] and [Formula Presented] for double/twin-Λ hypernucleus, single-Λ hypernucleus, and no hypernucleus cases, respectively. With the same sample, we set upper limits on R (stopped-[Formula Presented] stopped-[Formula Presented] all) for [Formula Presented] decaying into [Formula Presented] and [Formula Presented] for [Formula Presented] masses just below [Formula Presented] mass threshold and for [Formula Presented] lifetime range [Formula Presented] The upper limits on [Formula Presented] are [Formula Presented] assuming all of the [Formula Presented] decay into each decay mode. Our results give a tight constraint on the existence of the bound [Formula Presented] in comparison with the theoretical estimates of Aerts and Dover, albeit with different target nuclei.",

author = "Ahn, {J. K.} and S. Aoki and Chung, {K. S.} and Chung, {M. S.} and H. En{\textquoteright}yo and T. Fukuda and H. Funahashi and Y. Goto and A. Higashi and M. Ieiri and T. Iijima and M. Iinuma and K. Imai and Y. Itow and Lee, {J. M.} and S. Makino and A. Masaike and Y. Matsuda and Y. Matsuyama and S. Mihara and C. Nagoshi and I. Nomura and Park, {I. S.} and N. Saito and M. Sekimoto and Shin, {Y. M.} and Sim, {K. S.} and R. Susukita and R. Takashima and F. Takeutchi and P. Tlust{\'y} and S. Weibe and S. Yokkaichi and K. Yoshida and M. Yoshida and T. Yoshida and S. Yamashita",

year = "2000",

doi = "10.1103/PhysRevC.62.055201",

language = "English",

volume = "62",

pages = "12",

journal = "Physical Review C - Nuclear Physics",

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T1 - [Formula Presented]-dibaryon and hypernucleus formation in the [Formula Presented] reaction at rest

AU - Ahn, J. K.

AU - Aoki, S.

AU - Chung, K. S.

AU - Chung, M. S.

AU - En’yo, H.

AU - Fukuda, T.

AU - Funahashi, H.

AU - Goto, Y.

AU - Higashi, A.

AU - Ieiri, M.

AU - Iijima, T.

AU - Iinuma, M.

AU - Imai, K.

AU - Itow, Y.

AU - Lee, J. M.

AU - Makino, S.

AU - Masaike, A.

AU - Matsuda, Y.

AU - Matsuyama, Y.

AU - Mihara, S.

AU - Nagoshi, C.

AU - Nomura, I.

AU - Park, I. S.

AU - Saito, N.

AU - Sekimoto, M.

AU - Shin, Y. M.

AU - Sim, K. S.

AU - Susukita, R.

AU - Takashima, R.

AU - Takeutchi, F.

AU - Tlustý, P.

AU - Weibe, S.

AU - Yokkaichi, S.

AU - Yoshida, K.

AU - Yoshida, M.

AU - Yoshida, T.

AU - Yamashita, S.

PY - 2000

Y1 - 2000

N2 - Stopped-[Formula Presented] reactions have been investigated with respect to H-dibaryon and hypernucleus formation with a scintillating fiber detector. Out of [Formula Presented] tagged [Formula Presented] particles via the [Formula Presented] reaction we obtained 72 stopping [Formula Presented] events with [Formula Presented] background events after imposing kinematic constraints. Hypernuclear production has been studied by observing free Λ decays in the stopped-[Formula Presented] reactions. From the observed Λ momentum spectrum, we have found the hypernuclear production rates to be [Formula Presented] and [Formula Presented] for double/twin-Λ hypernucleus, single-Λ hypernucleus, and no hypernucleus cases, respectively. With the same sample, we set upper limits on R (stopped-[Formula Presented] stopped-[Formula Presented] all) for [Formula Presented] decaying into [Formula Presented] and [Formula Presented] for [Formula Presented] masses just below [Formula Presented] mass threshold and for [Formula Presented] lifetime range [Formula Presented] The upper limits on [Formula Presented] are [Formula Presented] assuming all of the [Formula Presented] decay into each decay mode. Our results give a tight constraint on the existence of the bound [Formula Presented] in comparison with the theoretical estimates of Aerts and Dover, albeit with different target nuclei.

AB - Stopped-[Formula Presented] reactions have been investigated with respect to H-dibaryon and hypernucleus formation with a scintillating fiber detector. Out of [Formula Presented] tagged [Formula Presented] particles via the [Formula Presented] reaction we obtained 72 stopping [Formula Presented] events with [Formula Presented] background events after imposing kinematic constraints. Hypernuclear production has been studied by observing free Λ decays in the stopped-[Formula Presented] reactions. From the observed Λ momentum spectrum, we have found the hypernuclear production rates to be [Formula Presented] and [Formula Presented] for double/twin-Λ hypernucleus, single-Λ hypernucleus, and no hypernucleus cases, respectively. With the same sample, we set upper limits on R (stopped-[Formula Presented] stopped-[Formula Presented] all) for [Formula Presented] decaying into [Formula Presented] and [Formula Presented] for [Formula Presented] masses just below [Formula Presented] mass threshold and for [Formula Presented] lifetime range [Formula Presented] The upper limits on [Formula Presented] are [Formula Presented] assuming all of the [Formula Presented] decay into each decay mode. Our results give a tight constraint on the existence of the bound [Formula Presented] in comparison with the theoretical estimates of Aerts and Dover, albeit with different target nuclei.

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[Formula Presented]-dibaryon and hypernucleus formation in the [Formula Presented] reaction at rest

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!!!All Science Journal Classification (ASJC) codes

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